Search for dissertations about: "Parus"
Showing result 1 - 5 of 21 swedish dissertations containing the word Parus.
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1. Costs, benefits and constraints in the evolution of avian reproductive tactics: a study on the blue tit
Abstract : In this study I have investigated the various factors influencing reproductive tactics among breeding blue tits (Parus caeruleus). The study was carried out in a nestbox-breeding population of marked individuals at the Revinge Area, outside Lund, southern Sweden. READ MORE
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2. Costs and benefits of immune system activation on physiology, behavior and offspring phenotype from an immunoecological perspective
Abstract : Pathogen challenges and host immune defenses can have substantial impact on life history patterns of animals. Biotic and abiotic factors may affect immunity in wild animals, influencing e.g., population dynamics and sexual selection. READ MORE
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3. Causes and consequences of blood parasite infections in birds
Abstract : Parasites are ubiquitous and can cause significant fitness reductions to their hosts. Therefore, selection for the evolution of host resistance should be strong. However, resistance may be costly and should be traded-off against other fitness related traits. READ MORE
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4. Autumn movements in Parus and Aegithalos (Passeriformes) in central Sweden
Abstract : .... READ MORE
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5. Avian thermoregulation across age and seasons
Abstract : Animals constantly need to relate to prevailing environmental conditions and regulate their body temperature accordingly. Body temperature regulation in birds and mammals is inherently linked to energy expenditure and, thus, thermoregulation is a physiological mechanism that could trade-off with other costly processes, with potential long-term fitness consequences. READ MORE